矿物绝缘油.石蜡/环烷的自然特性.低温差分扫描量热测量(DSC)试验方法

[中文适用范围]： 本技术报告提供了一种通过低温差示扫描量热法 (DSC) 将矿物绝缘油分类为石蜡油或环烷油的测试方法。就本技术报告而言，典型工作温度范围为 -100 °C 至 +100 °C。温度范围可以扩大，具体取决于所使用的仪器。该方法适用于从石油原油中提取的矿物绝缘油。它也适用于含有倾点抑制剂的矿物油，因为这些添加剂不能防止石蜡晶体的形成，而只能防止此类微晶体的生长。 [外文原描述]： Describes a test method for the classification of mineral insulating oils as either paraffinic or naphthenic, by means of low-temperature differential scanning calorimetry (DSC). For the purpose of this technical report, the typical operating temperature range extends from -100 °C to +100 °C. The temperature range can be extended, depending upon the instrumentation used. The method is applicable to mineral insulating oils obtained from petroleum crudes. It may be also applied to mineral oils containing pour point depressants, as these additives do not prevent the formation of paraffin crystals but only the growing of such micro-crystals.